When Demand Is Perfectly Inelastic,the Price Elasticity of Demand

question 17

Multiple Choice

When demand is perfectly inelastic,the price elasticity of demand

• A)is zero,and the demand curve is vertical.
• B)is zero,and the demand curve is horizontal.
• C)approaches infinity,and the demand curve is vertical.
• D)approaches infinity,and the demand curve is horizontal.

---

Definitions:

Cells

The basic structural, functional, and biological unit of all known living organisms, serving as the building blocks of life.

Glial Cell

Non-neuronal cells in the central and peripheral nervous system that support, protect, and nourish neurons.

Blood-Brain Barrier

A selective permeability barrier that protects the brain from foreign substances in the blood that may injure the brain.

Cerebrospinal Fluid

The clear, colorless body fluid found in the brain and spinal cord, protecting and nourishing them.